Matty said:
No the rear, which has less weight i.e. no engine to keep it loaded needs most grip as it will break away when it loses traction, hence why you always put newest rubber on the back of a front wheel drive car.
Fifth Gear did a test a while back and showed the handling of a car with just new tyres on front and just new on back. Brittania Tyres also adopts this policy and think if you check most tyre manufacturers websites, they also back this up.
Here is Michelin's take on it:
http://www.michelin.co.uk/uk/auto/auto_cons_bib_pqr_neuf.jsp
It's a fair point Matty and you've got the backing of Michelin which puts me a little behind the 8 ball................but I still don't agree.
Most car manufacturers build understeer into their cars as the the default setting for 'over the limit' chassis behaviour as this is more easily controlled by 'non enthusiast' drivers. Tyre companies that recommend putting newer tyres on the rear of a front wheel drive car do this for the same reason - to encourage understeer as the default behaviour.
Yes, in extremes it is safer to the layman but in every other situation, be it aquaplaning, steering feel, turn in behaviour, traction, straight line tracking and neutrality (offsetting a car's natural tendency to understeer) it would be advantageous to fit the new rubber on the front.
Tyre companies and fitters may well think that they are playing it safe by advising that the new tyres go on the rear but containing oversteer in an emergency situation does not convey the whole driving dynamics picture accurately. It merely covers one scenario to the detriment of all the others.